2.10.7.6 Spark Plug Diagnostic
A
B
C
D
FE02-2050b
Step 1
Remove the spark plug. Refer to
.
Next
Step 2
Check whether the terminal terminal A is bent or broken, pull the terminal to test whether the terminal A is
loose.
Next
Step 3
Check whether the B-insulator has arcing or signs of leakage, which is due to discharge between terminal
A and terminal B two ends.
Check whether there are following conditions:
(a)
Check the high-voltage damping line for damage.
(b)
Check whether the cylinder head spark plug groove is wet.
Whether there is engine oil, engine coolant or water. Damped
spark plug will cause arc discharge.
Next
Step 4
Check whether there is crack on the insulator B, otherwise it will cause discharge.
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Ignition System JL4G18-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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